<template>
    <div>
        <Button type="primary" @click="modal6 = true">修改头像</Button>
        <Modal v-model="modal6" title="修改头像" width="700" :footer-hide="hide">
            <div class="cropper-content">
                <div class="cropper">
                    <vueCropper
                        ref="cropper"
                        :img="option.img"
                        :outputSize="option.size"
                        :outputType="option.outputType"
                        :info="true"
                        :full="option.full"
                        :canMove="option.canMove"
                        :canMoveBox="option.canMoveBox"
                        :original="option.original"
                        :autoCrop="option.autoCrop"
                        :autoCropWidth="option.autoCropWidth"
                        :autoCropHeight="option.autoCropHeight"
                        :fixedBox="option.fixedBox"
                        @realTime="realTime"
                        @imgLoad="imgLoad"
                    ></vueCropper>
                </div>
                <div
                    class="show-preview"
                    :style="{'width': previews.w + 'px', 'height': previews.h + 'px',  'overflow': 'hidden', 'margin': '5px'}"
                >
                    <div :style="previews.div" class="preview">
                        <img :src="previews.url" :style="previews.img" />
                    </div>
                </div>
            </div>

            <div class="footer-btn">
                <div class="scope-btn">
                    <label class="btn" for="uploads">选择图片</label>
                    <input
                        type="file"
                        id="uploads"
                        style="position:absolute; clip:rect(0 0 0 0);"
                        accept="image/png, image/jpeg, image/gif, image/jpg"
                        @change="uploadImg($event, 1)"
                    />
                    <Button @click="changeScale(1)" icon="md-add"></Button>
                    <Button @click="changeScale(-1)" icon="md-remove"></Button>
                    <Button @click="rotateLeft">
                        <span style="font-weight: 600;">↺</span>
                    </Button>
                    <Button @click="rotateRight">
                        <span style="font-weight: 600;">↻</span>
                    </Button>
                    <Button @click="down('blob')" icon="md-download"></Button>
                </div>
                <div class="upload-btn">
                    <Button type="primary" style="margin-left: 46px;" @click="finish('blob')">上传头像</Button>
                </div>
            </div>
        </Modal>
    </div>
</template>

<script>
import { VueCropper } from "vue-cropper";

export default {
  name: "my-upload",
  data() {
    return {
      modal6: false,
      hide: true,
      crap: false,
      previews: {},
      option: {
        img: "",
        size: 1,
        full: false, // 输出原图比例截图 props名full
        outputType: "png",
        canMove: true,
        original: false,
        canMoveBox: true,
        autoCrop: true,
        autoCropWidth: 200,
        autoCropHeight: 200,
        fixedBox: true
      },
      downImg: "#"
    };
  },
  components: { VueCropper },
  methods: {
    changeScale(num) {
      num = num || 1;
      this.$refs.cropper.changeScale(num);
    },
    rotateLeft() {
      this.$refs.cropper.rotateLeft();
    },
    rotateRight() {
      this.$refs.cropper.rotateRight();
    },
    finish(type) {
      // console.log('finish');
      let _this = this;
      let formData = new FormData();
      // 输出
      if (type === "blob") {
        this.$refs.cropper.getCropBlob(data => {
          let img = window.URL.createObjectURL(data);
          formData.append("file", data, "file");
          this.$emit("finish", formData);
          this.modal6 = false;
        });
      } else {
        this.$refs.cropper.getCropData(data => {
          this.model = true;
          this.modelSrc = data;
        });
      }
      
    },
    // 实时预览函数
    realTime(data) {
      this.previews = data;
    },
    down(type) {
      // event.preventDefault()

      var aLink = document.createElement("a");
      aLink.download = "author-img";
      // 输出
      if (type === "blob") {
        this.$refs.cropper.getCropBlob(data => {
          console.log(data);
          this.downImg = window.URL.createObjectURL(data);
          //            aLink.download = this.downImg;
          console.log(this.downImg);
          aLink.href = window.URL.createObjectURL(data);
          aLink.click();
        });
      } else {
        this.$refs.cropper.getCropData(data => {
          this.downImg = data;
          console.log(data);
          // aLink.href = data
          // aLink.click()
          // 将头像图片数据发送给后台
        });
      }
    },
    uploadImg(e, num) {
      //上传图片
      // this.option.img
      var file = e.target.files[0];
      if (!/\.(gif|jpg|jpeg|png|bmp|GIF|JPG|PNG)$/.test(e.target.value)) {
        alert("图片类型必须是.gif,jpeg,jpg,png,bmp中的一种");
        return false;
      }
      var reader = new FileReader();
      reader.onload = e => {
        let data;
        if (typeof e.target.result === "object") {
          // 把Array Buffer转化为blob 如果是base64不需要
          data = window.URL.createObjectURL(new Blob([e.target.result]));
        } else {
          data = e.target.result;
        }
        if (num === 1) {
          this.option.img = data;
        } else if (num === 2) {
          this.example2.img = data;
        }
      };
      // 转化为base64
      //reader.readAsDataURL(file)
      // 转化为blob
      reader.readAsArrayBuffer(file);
    },
    imgLoad(msg) {
      console.log(msg);
    }
  }
};
</script>

<style>
.cropper-content {
  display: flex;
  display: -webkit-flex;
  justify-content: flex-end;
  -webkit-justify-content: flex-end;
}
.cropper-content .cropper {
  width: 350px;
  height: 300px;
}
.cropper-content .show-preview {
  flex: 1;
  -webkit-flex: 1;
  display: flex;
  display: -webkit-flex;
  justify-content: center;
  -webkit-justify-content: center;
}
.cropper-content .show-preview .preview {
  overflow: hidden;
  border-radius: 50%;
  border: 1px solid #cccccc;
  background: #cccccc;
  margin-left: 40px;
}
.footer-btn {
  margin-top: 30px;
  display: flex;
  display: -webkit-flex;
  justify-content: flex-end;
  -webkit-justify-content: flex-end;
}
.footer-btn .scope-btn {
  width: 350px;
  display: flex;
  display: -webkit-flex;
  justify-content: space-between;
  -webkit-justify-content: space-between;
}
.footer-btn .upload-btn {
  flex: 1;
  -webkit-flex: 1;
  display: flex;
  display: -webkit-flex;
  justify-content: center;
  -webkit-justify-content: center;
}
.footer-btn .btn {
  outline: none;
  display: inline-block;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  -webkit-appearance: none;
  text-align: center;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  outline: 0;
  margin: 0;
  -webkit-transition: 0.1s;
  transition: 0.1s;
  font-weight: 500;
  padding: 10px 15px;
  font-size: 12px;
  border-radius: 3px;
  color: #fff;
  background-color: #67c23a;
  border-color: #67c23a;
}
</style>
